Portuguese
calcopirita Catalan
calcopirita 1
The common are is chalcopyrite, a copper sulphide; that is, it is composed of copper and sulphur.
2
Basalt with traces of chalcopyrite.-L.
3
The West Desert deposit consists of coarse-grained sphalerite with minor chalcopyrite occurring in skarn developed in thin-bedded, shaly carbonate rocks near the intrusive complex.
1
Quartz with specular iron ore. Greenstone, with chalcedony and copper pyrites.
2
One piece must contain copper pyrites and the other zincites.
3
But since about 1860 sulphuric acid has been more largely made from iron or copper pyrites.
4
Quartz, containing disseminated hematitic iron-ore and copper pyrites.
5
Thallium is a rare metal, found in small quantities in some varieties of iron and copper pyrites, and in some lithia micas.
6
Copper pyrites (or yellow ore), erubescite (or purple ore), and chalcocite (or grey ore) are the most important.
7
Copper pyrites, by its aspect from the other minerals, and from iron pyrites by its inferior hardness and less gravity.